diff --git a/firmware/test/fat/test.sh b/firmware/test/fat/test.sh
index a78d0c7e17..921a0c80bf 100644
--- a/firmware/test/fat/test.sh
+++ b/firmware/test/fat/test.sh
@@ -105,7 +105,7 @@ runtests() {
         check
         try mkfile "/rockbox rocks.$i" $SIZE
         check
-        try ren "/rockbox rocks.$i" "$i is a new long filename!"
+        try ren "/rockbox rocks.$i" "/$i is a new long filename!"
         check
     done